Air pollution has grown to be such a huge problem in China because of China's past. The reason for this is because in the past China used people from lower classes to work for industries. This made modern day China the largest industrial country in the world. Now that they have so many factories they have, in most recent decades, contributed to their air pollution problem because of industrialization and urbanization.
Even though at first China failed, they were very persistent and between the years 2006 and 2012. In these years China used new tools in the 11th five year plan to get rid of air pollution and achieved the national goal of reducing sulfur dioxide emissions by 10%. Although they cut down emissions by 10%, the compound air pollution problem caused by PM2.5 (fine particulate matter) grew worse along with the ground level ozone. This PM2.5 episode in 2013 lasted all winter.
To protect themselves most people remain indoors when the weather looks hazy and polluted. 48.5% of people have worn face masks when they do actually go outside. Cotton and gauze being the most frequently used mask. A lot of people are help themselves with the problem of air pollution by learning about it. Most people that know this information are of a certain age or occupation. And the awareness rate was relatively high and there was a lot of enthusiasm for air pollution control.